Wema Fuel Tank Sender Under-ring

Chief Engineer · 28-06-2009, 19:46

Any suggestions on how to install it?

Thanks

Microship · 28-06-2009, 19:55

I used three of them on my tanks, two on aluminum inspection plates and one on a normal sender plate with the same bolt circle (replacing an old swing-arm unit). I just lined it up as specified and it worked great (with cork gasket). I can imagine it would be bit tricky installing in a tank opening without an inspection port... is there a problem?

Steve

donradcliffe · 28-06-2009, 20:52

Is that the one with the 5 screws and one is longer than the rest, so you put it on first, then slide the ring through the hole and put in the other 4 screws??

Microship · 28-06-2009, 21:23

I used this one. It was easy to install in an existing removable inspection plate (see photo below).

Steve

Chief Engineer · 28-06-2009, 22:08

Quote:

Originally Posted by donradcliffe

Is that the one with the 5 screws and one is longer than the rest, so you put it on first, then slide the ring through the hole and put in the other 4 screws??

And I this is why I love this forum.......

GordMay · 29-06-2009, 03:47

Quote:

Originally Posted by donradcliffe

Is that the one with the 5 screws and one is longer than the rest, so you put it on first, then slide the ring through the hole and put in the other 4 screws??

Install the first screw thtrough the threaded flange and the interior mounting adapter, before twisting the adapter into the tank. Then “fiddle” the remaining screws into place, then tighten.
➥ SHS Holding Tank Sender Installation Drawing by WEMA USA, Inc.

There are also folding backing rings, like these
➥ Seabuilt - Access Plate Systems

Chief Engineer · 29-06-2009, 06:05

Great....thanks Gord.....

motion30 · 29-06-2009, 07:06

yo Chief, you knew that!

Chief Engineer · 29-06-2009, 18:10

I was not happy with the screws they include......three of them "galled"....it may have been the threads in the under-rings......all the holes lined up fine, but after starting them with my fingers, they seized up about 1/2 way in.....Oh well...the senders are in and tight.

Microship · 29-06-2009, 18:24

Silver threads among the galled... that can ruin one's whole day! I always dab on a bit of anti-seize when using stainless fasteners.

The Wema sensors are great... so far very impressed. Much better than the old noisy swing-arm things, and they play nice with the Maretron TLA-100 module that interfaces them to the NMEA2000 bus. Here's the display that has replaced my clunky old analog gauge with three big honkin' pushbuttons plus one for backlight... the new gauges represent port and starboard wing tanks at the top, and the larger aft tank at the bottom.

Steve

28-06-2009, 19:46	#1
Chief Engineer Registered User Join Date: Aug 2006 Location: North of Baltimore Boat: Ericson 27 & 18' Herrmann Catboat Posts: 1,951	Wema Fuel Tank Sender Under-ring Any suggestions on how to install it? Thanks

28-06-2009, 19:55	#2
Microship Registered User Join Date: Dec 2005 Location: Camano Island, WA Boat: Amazon 44 - Nomadness Posts: 401 Images: 6	I used three of them on my tanks, two on aluminum inspection plates and one on a normal sender plate with the same bolt circle (replacing an old swing-arm unit). I just lined it up as specified and it worked great (with cork gasket). I can imagine it would be bit tricky installing in a tank opening without an inspection port... is there a problem? Steve __________________ Nomadic Research Labs

28-06-2009, 21:23	#4
Microship Registered User Join Date: Dec 2005 Location: Camano Island, WA Boat: Amazon 44 - Nomadness Posts: 401 Images: 6	I used this one. It was easy to install in an existing removable inspection plate (see photo below). Steve Attached Thumbnails __________________ Nomadic Research Labs

29-06-2009, 18:24	#10
Microship Registered User Join Date: Dec 2005 Location: Camano Island, WA Boat: Amazon 44 - Nomadness Posts: 401 Images: 6	Silver threads among the galled... that can ruin one's whole day! I always dab on a bit of anti-seize when using stainless fasteners. The Wema sensors are great... so far very impressed. Much better than the old noisy swing-arm things, and they play nice with the Maretron TLA-100 module that interfaces them to the NMEA2000 bus. Here's the display that has replaced my clunky old analog gauge with three big honkin' pushbuttons plus one for backlight... the new gauges represent port and starboard wing tanks at the top, and the larger aft tank at the bottom. Steve Attached Thumbnails __________________ Nomadic Research Labs

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28-06-2009, 20:52	#3
donradcliffe Registered User Join Date: Mar 2007 Location: Santa Cruz for summer Boat: Beneteau First 456 Posts: 630	Is that the one with the 5 screws and one is longer than the rest, so you put it on first, then slide the ring through the hole and put in the other 4 screws??

29-06-2009, 06:05	#7
Chief Engineer Registered User Join Date: Aug 2006 Location: North of Baltimore Boat: Ericson 27 & 18' Herrmann Catboat Posts: 1,951	Great....thanks Gord.....

29-06-2009, 07:06	#8
motion30 Registered User Join Date: Feb 2009 Posts: 223	yo Chief, you knew that!

29-06-2009, 18:10	#9
Chief Engineer Registered User Join Date: Aug 2006 Location: North of Baltimore Boat: Ericson 27 & 18' Herrmann Catboat Posts: 1,951	I was not happy with the screws they include......three of them "galled"....it may have been the threads in the under-rings......all the holes lined up fine, but after starting them with my fingers, they seized up about 1/2 way in.....Oh well...the senders are in and tight.

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